A litchi sorting grading device

Abstract

The utility model relates to litchi sorting technical field discloses a kind of grading devices for litchi sorting, including workbench, the top front and rear side of workbench is fixedly connected with side plate, the top right end of two side plates is fixedly connected with feed slot, automatic sorting mechanism is arranged between two side plates, and the automatic sorting mechanism is used to sort litchi size, the top of two side plates is provided with flushing mechanism, and the flushing mechanism is used to flush litchi in sorting process.The utility model in the present application, high-frequency vibration is generated by vibration motor, is transferred to top sorting frame through guide vibration rod, then each layer sorting frame is driven synchronous vibration by connecting rod, realizes the automatic grading and efficient sorting effect of litchi size, can adjust vibration frequency and sorting aperture according to litchi variety, ensure accurate separation, improve automation degree and production efficiency, applicable to large-scale sorting scene.

Description

Technical Field

[0001] This utility model relates to the field of lychee sorting technology, and in particular to a grading device for lychee sorting. Background Technology

[0002] As a tropical fruit with high economic value, the size and quality of lychees are directly related to market pricing and processing uses. In large-scale planting and distribution scenarios, lychees of different sizes need to be supplied to different fields such as fresh consumption, canning, and dried fruit production. However, the lychee ripening and harvesting period is concentrated, and manual sorting has problems such as low efficiency, high cost, and inconsistent standards. Especially during peak production periods, manual sorting is difficult to meet the needs of large-scale distribution. At the same time, the lychee skin is fragile, and frequent contact during manual sorting can easily lead to fruit damage and increase the risk of mold. Therefore, achieving accurate sorting of lychees by size through automated grading devices has become a key link in improving industry efficiency and reducing losses, and it is also an inevitable trend in the development of automated fruit processing.

[0003] Currently, some lychee sorting devices on the market use manual assistance or simple mechanical structures for grading. Manual sorting mainly relies on workers to judge by sight and select by hand to classify lychees according to size and quality. Although this method can achieve a certain degree of accurate grading, it has problems such as low efficiency, high labor costs, and high labor intensity. Moreover, the sorting standards are easily affected by the subjective factors of workers, making it difficult to guarantee consistency. On the other hand, some simple mechanical devices use multiple fixed screens with different apertures to make lychees pass through the corresponding aperture screens due to their own weight during vibration or conveying, thereby reducing manual intervention to a certain extent.

[0004] However, since the screen mesh size is fixed, it cannot be dynamically adjusted according to the differences in lychee varieties and batches. When encountering lychees of different sizes, the screen needs to be disassembled and replaced manually, which is cumbersome and time-consuming, seriously affecting sorting efficiency. Secondly, the device lacks an intelligent detection and feedback mechanism and cannot monitor the sorting status of lychees in real time. When fruit gets stuck or the screen gets clogged, it cannot be handled automatically and manual intervention is still required to troubleshoot, leading to sorting errors or unstable equipment operation. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a grading device for sorting lychees, which aims to improve the problem that existing technologies cannot automatically handle situations where fruit gets stuck or clogs the screen, requiring manual intervention to troubleshoot, leading to sorting errors or unstable equipment operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a grading device for sorting lychees, including a workbench, with side plates fixedly connected to the front and rear sides of the top of the workbench, a feeding chute fixedly connected to the top right end of the two side plates, an automatic sorting mechanism provided between the two side plates, the automatic sorting mechanism being used to sort lychees by size, and a rinsing mechanism provided at the top of the two side plates, the rinsing mechanism being used to rinse the lychees during the sorting process;

[0007] The automatic sorting mechanism includes multiple shafts, which are rotatably connected to the left side between two side plates. Sorting racks are fixedly connected to the right side of each shaft. Connecting rods are rotatably connected to the right ends of the front and rear sides of each sorting rack. Fixing blocks are fixedly connected to the top right ends of adjacent sides of the two side plates. Vibration motors are fixedly connected to the bottom of each of the two fixing blocks. Vibration guide rods are fixedly connected to the bottom of each of the two vibration motors. The two vibration guide rods are fixedly connected to the front and rear ends of the right side of the top sorting rack.

[0008] As a further description of the above technical solution:

[0009] The rinsing mechanism includes a water tank, which is fixedly connected to the top of two side plates via an installation assembly. A booster is fixedly connected to the top of the water tank, and multiple nozzles are installed at the bottom of the water tank. A water collection tank is fixedly connected to the bottom of the workbench, and a water pump is fixedly connected to the rear side of the rear side plate. The input end of the water pump is connected to the bottom of the water collection tank, and a sponge filter element is fitted inside the water collection tank. The output end of the water pump is connected to the rear top of the water tank.

[0010] As a further description of the above technical solution:

[0011] The mounting assembly includes a bracket that engages with the top of two side plates. Multiple mounting bolts pass through the bottom of the front and rear sides of the bracket, and the ends of the multiple mounting bolts are threaded to the top outer sides of the two side plates, respectively.

[0012] As a further description of the above technical solution:

[0013] The flushing mechanism also includes a sealing water inlet cap, which is installed on the left rear side of the top of the water tank.

[0014] As a further description of the above technical solution:

[0015] Multiple anti-fall plates are fixedly connected at equal intervals on the inner sides of the two side plates, and the adjacent sides of the multiple anti-fall plates are all designed with an inclined angle.

[0016] As a further description of the above technical solution:

[0017] Rubber pressure plates are fixedly connected between the multiple anti-fall plates on the front side and the multiple anti-fall plates on the rear side, and the multiple rubber pressure plates are all designed in an arc shape.

[0018] As a further description of the above technical solution:

[0019] All sorting racks are designed with a left-low-right-high tilt angle, and the internal spacing of the sorting racks decreases from top to bottom.

[0020] As a further description of the above technical solution:

[0021] The inner perimeter of the water collection trough is designed with an arc shape, and the bottom of the inner side of the water collection trough is designed with a cone shape.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, a high-frequency vibration is generated by a vibration motor, which is transmitted to the top sorting rack via a guide rod. Then, the connecting rod drives the sorting racks of each layer to vibrate synchronously. Lychees roll on the inclined sorting rack. Smaller lychees pass through the large-diameter gap in the upper layer and fall into the lower layer, while larger lychees continue to roll to the left end for collection. This achieves automatic grading and efficient sorting of lychee size. The vibration frequency and sorting aperture can be adjusted according to the lychee variety to ensure accurate separation, improve the degree of automation and production efficiency, and is suitable for large-scale sorting scenarios.

[0024] 2. In this utility model, the water in the water tank is pressurized by a booster, causing the nozzle to spray high-pressure water to wash the lychees. The wastewater falls into the water collection tank, is filtered by a sponge filter, and is then pumped back to the water tank for recycling. The installation components stabilize the water tank, achieving the effects of efficient lychee washing, water resource recycling, and convenient equipment maintenance. This ensures the cleanliness of the lychees, reduces manual cleaning, lowers water consumption, meets environmental protection requirements, and is suitable for simultaneous cleaning in large-scale sorting. Attached Figure Description

[0025] Figure 1 This is a perspective view of a grading device for sorting lychees according to the present invention;

[0026] Figure 2 This is a top view of a grading device for sorting lychees proposed in this utility model;

[0027] Figure 3 This is a right view of a grading device for sorting lychees proposed in this utility model;

[0028] Figure 4 This is a partial structural diagram of the automatic sorting mechanism in a grading device for sorting lychees proposed in this utility model;

[0029] Figure 5This is a structural exploded view of the sponge filter element in a grading device for sorting lychees proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of the nozzle structure in a grading device for sorting lychees proposed in this utility model.

[0031] Legend:

[0032] 1. Workbench; 2. Side plate; 3. Feed chute; 4. Automatic sorting mechanism; 401. Shaft; 402. Sorting rack; 403. Connecting rod; 404. Fixing block; 405. Vibration motor; 406. Vibration guide rod; 5. Washing mechanism; 501. Water tank; 502. Intensifier; 503. Nozzle; 504. Water collection tank; 505. Water pump; 506. Sponge filter element; 507. Mounting assembly; 5071. Bracket; 5072. Mounting bolt; 508. Sealing water inlet cover; 6. Anti-fall plate; 7. Rubber pressure plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model provides a grading device for sorting lychees, including a workbench 1, with side plates 2 fixedly connected to the front and rear sides of the top of the workbench 1, and a feeding trough 3 fixedly connected to the top right end of the two side plates 2. An automatic sorting mechanism 4 is provided between the two side plates 2, which is used to sort lychees by size. A rinsing mechanism 5 is provided at the top of the two side plates 2, which is used to rinse the lychees during the sorting process.

[0035] The automatic sorting mechanism 4 includes multiple shafts 401, which are rotatably connected to the left side between two side plates 2. Sorting racks 402 are fixedly connected to the right side of each of the multiple shafts 401. Connecting rods 403 are rotatably connected to the right ends of the front and rear sides of the multiple sorting racks 402. Fixing blocks 404 are fixedly connected to the top right ends of adjacent sides of the two side plates 2. Vibration motors 405 are fixedly connected to the bottom of each of the two fixing blocks 404. Guide rods 406 are fixedly connected to the bottom of each of the two vibration motors 405. The two guide rods 406 are fixedly connected to the front and rear ends of the right side of the top sorting rack 402.

[0036] Specifically, the automatic sorting mechanism 4 achieves lychee size sorting through vibration and grading aperture coordination. The automatic sorting mechanism 4 includes multiple horizontally arranged shafts 401, each shaft 401 is fixedly connected to a sorting frame 402 on its right side. The front and rear right ends of the sorting frame 402 are rotatably connected by connecting rods 403 to form a linkage sorting unit. A vibration motor 405 is installed at the bottom of the fixed block 404 at the top right end of the two adjacent side plates 2. Its bottom end is fixedly connected to the front and rear ends of the right side of the top sorting frame 402 through a vibration guide rod 406. When the device is running, the vibration motor 405 starts and generates high frequency. Vibration is transmitted to the top sorting rack 402 via the guide rod 406, and then to the lower sorting rack 402 via the connecting rod 403. Lychees fall from the feed trough 3 into the top sorting rack 402. The surface of the sorting rack 402 has sorting gaps with gradually increasing apertures along the sorting direction. Under the action of vibration, the lychees roll along the surface of the sorting rack 402. Smaller lychees pass through the gaps of the upper sorting rack 402 due to gravity and vibration and fall into the lower sorting rack 402; larger lychees continue to roll on the upper sorting rack 402. Due to the inclination angle of the sorting rack 402, the lychees roll onto the upper sorting rack 402. The sorting rack 402 collects lychees from its left end, ultimately achieving precise separation of lychees according to size. Multiple shafts 401 provide stable support for the sorting rack 402, ensuring continuous vibration during the process and preventing disassembly and maintenance due to blockage. The rotating connection structure of the connecting rod 403 enables the sorting racks 402 to move in unison during vibration, reducing lychee jamming at the sorting holes and improving sorting smoothness. The rinsing mechanism 5 sprays water onto the lychees during the sorting process. The water flow, combined with vibration, effectively washes away dust, impurities, and residual branches and leaves from the surface of the lychees. Impurities are carried away by the water flow from the sorting rack 402. The device features a 2-stage discharge system, enabling simultaneous sorting and cleaning. Vibration is transmitted from the vibrating motor 405 to the sorting rack 402 via the guide rod 406. Combined with the sorting hole design with increasing apertures on the sorting rack 402 and the linkage structure of the connecting rod 403, it achieves automatic grading and efficient sorting of lychees by size. The device can adjust the vibration frequency and sorting hole diameter according to the characteristics of the lychee variety to ensure accurate separation of lychees of different sizes. At the same time, the rinsing mechanism 5 cleans the lychees, reducing subsequent processing steps and improving the automation level and production efficiency of lychee sorting. It is suitable for large-scale lychee sorting scenarios.

[0037] Reference Figure 3 , Figure 5 and Figure 6The flushing mechanism 5 includes a water tank 501, which is fixedly connected to the top of two side plates 2 via a mounting assembly 507. The mounting assembly 507 includes a bracket 5071, which engages with the top of the two side plates 2. Multiple mounting bolts 5072 penetrate the bottom of the front and rear sides of the bracket 5071, and the ends of the bolts 5072 are threaded to the top outer sides of the two side plates 2. A booster 502 is fixedly connected to the top of the water tank 501. Multiple nozzles 503 are installed at the bottom of the workbench 1. A water collection tank 504 is fixedly connected to the bottom of the workbench 1. A water pump 505 is fixedly connected to the rear side of the rear side plate 2. The input end of the water pump 505 is connected to the bottom of the water collection tank 504. A sponge filter element 506 is engaged inside the water collection tank 504. The output end of the water pump 505 is connected to the top rear side of the water tank 501. The rinsing mechanism 5 also includes a sealing water injection cover 508, which is installed on the top rear left side of the water tank 501.

[0038] Specifically, the water tank 501 is fixed to the top of the two side plates 2 by the mounting assembly 507. The bracket 5071 of the mounting assembly 507 is snapped into the top of the side plate 2. Multiple mounting bolts 5072 passing through the bottom of the front and rear sides are threaded to the top of the outer side of the side plate 2. The bolts are tightened to ensure that the water tank 501 is installed firmly and to prevent shaking from affecting the water spraying accuracy. The booster 502 fixed to the top of the water tank 501 pressurizes the water inside. Multiple nozzles 503 evenly distributed at the bottom spray high-pressure water in a fan shape or column shape to cover the lychees on the sorting rack 402. When the lychees are vibrated and sorted on the sorting rack 402, the nozzles 503 spray water downwards. The water flow impacts the surface of the lychee, washing away dust, impurities, and residual branches and leaves. The water carrying impurities falls into the water collection tank 504 at the bottom of the workbench 1. The sponge filter element 506 inside the water collection tank 504 filters the water flow, intercepting impurity particles and preventing them from entering the circulation system. The water pump 505 on the rear side plate 2 has its input end connected to the bottom of the water collection tank 504 through a pipe, and its output end connected to the top rear side of the water tank 501. After the water pump 505 starts, it draws out the filtered water from the water collection tank 504 and pumps it back to the water tank 501, forming a "spray-collect-filter-pump" circulation loop. A sealing device is installed on the left side of the top rear side of the water tank 501. Water inlet cap 508 is used to replenish clean water. When the circulating water decreases due to evaporation or loss, the sealed water inlet cap 508 is opened to inject clean water, maintaining a stable water level in the water tank 501 and ensuring continuous rinsing. The booster 502 pressurizes the water, and the pressure can be adjusted according to the cleaning needs of the lychee surface, ensuring stable spray pressure from the nozzle 503 and improving the rinsing effect. The sponge filter element 506 adopts a porous structure design, with filtration accuracy meeting the requirements of the circulating water, and can be periodically disassembled for cleaning or replacement, making maintenance convenient. The bolt connection of the mounting component 507 facilitates the overall disassembly of the water tank 501, making it easy to access the nozzle 503 and booster 502. During maintenance, the water in the water tank 501 is pressurized by the booster 502, causing the nozzle 503 to spray high-pressure water to rinse the lychees. In conjunction with the water pump 505, the water in the water collection tank 504, after being filtered by the sponge filter element 506, is pumped back to the water tank 501 to form a circulation. The installation component 507 securely installs the water tank 501, achieving efficient rinsing of lychees during sorting, water resource recycling, and convenient equipment maintenance. This rinsing mechanism 5 can ensure the cleanliness of the lychee surface, reduce subsequent manual cleaning processes, and at the same time, the circulating water system reduces water resource consumption, meets the requirements of environmentally friendly production, and is suitable for synchronous cleaning operations in large-scale lychee sorting scenarios.

[0039] Reference Figure 1 , Figure 4 and Figure 5Multiple anti-fall plates 6 are fixedly connected at equal intervals on the inner sides of the two side plates 2, and the adjacent sides of the multiple anti-fall plates 6 are all designed with an inclination angle; rubber pressure plates 7 are fixedly connected between the multiple anti-fall plates 6 on the front side and the multiple anti-fall plates 6 on the rear side, and the multiple rubber pressure plates 7 are all designed with an arc shape; multiple sorting racks 402 are all designed with an inclination angle of left lower and right higher, and the internal spacing of the multiple sorting racks 402 is from large to small from top to bottom; the inner perimeter of the water collection tank 504 is designed with an arc shape, and the inner bottom of the water collection tank 504 is designed with a conical shape;

[0040] Specifically, multiple anti-fall plates 6, equidistantly fixed on the inner sides of the two side plates 2, are angled on adjacent sides. An arc-shaped rubber pressure plate 7 is fixed between the front and rear anti-fall plates 6. The angled design of the anti-fall plates 6 guides the lychees to roll along the surface of the sorting rack 402, preventing them from falling through the gap between the side plates 2 and the sorting rack 402. The arc-shaped structure of the rubber pressure plate 7 fits against the surface of the sorting rack 402, pressing the lychees and keeping them rolling in the middle of the sorting rack 402, preventing them from jumping out of the sorting rack 402 due to vibration. The multiple sorting racks 402 are designed with a left-low, right-high angle, and the internal spacing decreases from top to bottom. This angled design ensures that the lychees roll smoothly within the vibrating motor. Under the vibration of 405, the lychees automatically roll from right to left. Smaller lychees fall through the larger gaps in the upper sorting rack 402 into the lower sorting rack 402, while larger lychees roll to the lower sorting rack 402 and are graded through the smaller gaps in the sorting holes, thus achieving automatic sorting of lychees by size. The inner perimeter of the water collection tank 504 is designed with an arc shape, and the bottom of the inner perimeter is designed with a cone shape. The arc shape reduces dead angles when water flows, allowing water carrying impurities to flow smoothly to the bottom. The cone shape allows the water flow to converge at the lowest point, making it easy for the water pump 505 to draw water from the bottom of the water collection tank 504. At the same time, impurities are deposited at the bottom of the cone shape, making it easy to clean.

[0041] Working Principle: Lychees enter the device through the feeding chute 3 fixed to the top right end of the two side plates 2. This is the starting port for lychee conveying. After falling, the lychees directly enter the automatic sorting mechanism 4. The core components of this mechanism include multiple shafts 401, which are rotatably connected to the left side between the two side plates 2. Each shaft 401 is fixedly connected to a sorting rack 402 on its right side. The front and rear right ends of the multiple sorting racks 402 are rotatably connected through connecting rods 403. This connection method allows the sorting racks 402 to form a linkage sorting unit system. At the top right end of the adjacent side of the side plate 2, a vibration motor 405 is installed at the bottom of the fixing block 404. The vibration motor 405 is fixed to the front and rear ends of the right side of the top sorting rack 402 through the vibration guide rod 406, forming a vibration transmission path. When the device is started, the vibration motor 405 starts to work, generating high-frequency vibration. The vibration is transmitted to the top sorting rack 402 through the vibration guide rod 406. Since the sorting racks 402 are connected by connecting rods 403, the vibration motor 405 is connected to the top sorting rack 402 through the vibration guide rod 406. 3. The rotation connection allows vibration to be transmitted from the top sorting rack 402 to the bottom layer, causing all sorting racks 402 to vibrate synchronously. Each sorting rack 402 adopts a left-low, right-high tilt design, and its internal spacing is arranged in a regular pattern from top to bottom, decreasing in size. After the lychees enter the sorting rack 402, they will roll from the right side to the left end of the sorting rack 402 under the vibration generated by the vibration motor 405. During the rolling process, smaller lychees can pass through the larger gaps in the upper sorting rack 402 due to their own weight and the force brought by the vibration, and thus fall into the lower sorting rack 402; while larger lychees, because their size exceeds the gaps in the upper sorting rack 402, will continue to roll in the upper sorting rack 402 until they roll down from the left end and are collected. Through this design, the lychees are accurately separated according to size. The shaft 401 provides stable support for the sorting rack 402 during this process, ensuring that the vibration process can continue stably.The rotating connection structure of the connecting rod 403 effectively reduces the jamming phenomenon of lychees during the sorting process, greatly improving the smoothness of sorting. While the lychees are being sorted, the rinsing mechanism 5 starts operating simultaneously. The water tank 501 of the rinsing mechanism 5 is fixed to the top of the side plate 2 by the mounting component 507. The bracket 5071 of the mounting component 507 is engaged with the top of the side plate 2. Multiple mounting bolts 5072 pass through the bottom of the front and rear sides of the bracket 5071. The ends of these mounting bolts 5072 are threaded to the top of the outer sides of the two side plates 2 respectively. By tightening the bolts, the water tank 501 is ensured to be installed firmly, avoiding shaking during operation and affecting the water spraying accuracy. The booster 502 fixedly connected to the top of the water tank 501 pressurizes the internal water. Multiple nozzles 503 installed at the bottom of water tank 501 spray pressurized water in a fan or columnar shape. The high-pressure water can completely cover the lychees being sorted on sorting rack 402. When the lychees are vibrating and sorting on sorting rack 402, the high-pressure water jets sprayed downwards from the nozzles 503 impact the surface of the lychees, washing away dust, impurities, and residual branches and leaves. The water carrying impurities falls into the water collection tank 504 at the bottom of workbench 1 under gravity. A sponge filter element 506 is fitted inside the water collection tank 504. The sponge filter element 506 filters the incoming water, effectively intercepting impurity particles and preventing these impurities from entering the subsequent circulation system, thereby ensuring the cleanliness of the circulating water. The rear side plate 2 of the device is fixed to the rear side... A water pump 505 is fixedly connected. The input end of the water pump 505 is connected to the bottom of the water collection tank 504 through a pipe, and the output end is connected to the top rear side of the water tank 501. When the water pump 505 starts, it will draw out the water filtered by the sponge filter element 506 from the water collection tank 504 and pump it back to the water tank 501, thus forming a complete circulation loop. The sealed water inlet cover 508 installed on the left side of the top rear side of the water tank 501 is used to allow the operator to open the sealed water inlet cover 508 and inject clean water into the water tank 501 when the circulating water decreases due to evaporation or other losses, thereby maintaining a stable water level in the water tank 501 and ensuring that the rinsing process can be carried out continuously. The booster 502 has an adjustment function and can adjust the water pressure according to the actual needs of cleaning the lychee surface. The size is adjusted to ensure stable water pressure of the nozzle 503, further improving the rinsing and cleaning effect of the lychees. The sponge filter element 506 adopts a multi-porous structure design, and its filtration accuracy can fully meet the requirements of the circulating water. Moreover, the filter element can be disassembled for cleaning or replacement periodically, which is very convenient for maintenance. The bolt connection of the installation component 507 allows the water tank 501 to be completely disassembled when maintenance is required, which is convenient for staff to inspect and repair components such as the nozzle 503 and the booster 502. In order to ensure that the lychees do not fall or jump out of the sorting rack 402 during the sorting process, multiple anti-fall plates 6 are fixedly connected at equal intervals on the inner side of the two side plates 2, and the adjacent side of the multiple anti-fall plates 6 is designed with an inclination angle.Rubber pressure plates 7 are fixedly connected between the multiple anti-fall plates 6 on the front and rear sides. These rubber pressure plates 7 all feature an arc-shaped design. The angled design of the anti-fall plates 6 effectively guides the rolling direction of the lychees, ensuring they roll along the surface of the sorting rack 402 and preventing them from falling through the gap between the side plate 2 and the sorting rack 402. The arc-shaped structure of the rubber pressure plates 7 allows them to fit tightly against the surface of the sorting rack 402, pressing down on the lychees as they roll, ensuring they remain in the center of the sorting rack 402 and preventing them from jumping out of the sorting rack due to excessive vibration. The 402 frame ensures the normal and orderly operation of the sorting process. The water collection trough 504 also features a special design: its inner perimeter is curved, and its inner bottom is conical. The curved perimeter effectively reduces dead angles caused by water flow impact, allowing water carrying impurities to flow more smoothly to the bottom of the collection trough 504. The conical bottom design allows water to naturally converge at the lowest point, facilitating water pump 505 to draw water from the bottom of the collection trough 504. Simultaneously, impurities naturally settle at the conical bottom, making cleaning easier for staff.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grading device for sorting lychees, comprising a workbench (1), characterized in that: The workbench (1) is fixedly connected to the front and rear sides of the top with side plates (2), and the top right end of the two side plates (2) is fixedly connected to the feed chute (3). An automatic sorting mechanism (4) is provided between the two side plates (2). The automatic sorting mechanism (4) is used to sort the lychees by size. A rinsing mechanism (5) is provided at the top of the two side plates (2). The rinsing mechanism (5) is used to rinse the lychees during the sorting process. The automatic sorting mechanism (4) includes multiple shafts (401), which are rotatably connected to the left side between two side plates (2). Sorting racks (402) are fixedly connected to the right side of each of the multiple shafts (401). Connecting rods (403) are rotatably connected to the right ends of the front and rear sides of each of the multiple sorting racks (402). Fixing blocks (404) are fixedly connected to the top right ends of adjacent sides of the two side plates (2). Vibration motors (405) are fixedly connected to the bottom of each of the two fixing blocks (404). Guide rods (406) are fixedly connected to the bottom of each of the two vibration motors (405). Guide rods (406) are fixedly connected to the front and rear ends of the right side of the top sorting rack (402).

2. The grading device for sorting lychees according to claim 1, characterized in that: The rinsing mechanism (5) includes a water tank (501), which is fixedly connected to the top of two side plates (2) by an installation assembly (507). A booster (502) is fixedly connected to the top of the water tank (501). Multiple nozzles (503) are installed at the bottom of the water tank (501). A water collection tank (504) is fixedly connected to the bottom of the workbench (1). A water pump (505) is fixedly connected to the rear side of the rear side plate (2). The input end of the water pump (505) is connected to the bottom of the water collection tank (504). A sponge filter element (506) is engaged inside the water collection tank (504). The output end of the water pump (505) is connected to the top rear side of the water tank (501).

3. A grading device for sorting lychees according to claim 2, characterized in that: The mounting assembly (507) includes a bracket (5071) that engages with the top of the two side plates (2). Multiple mounting bolts (5072) are threaded through the bottom of the front and rear sides of the bracket (5071), and the ends of the multiple mounting bolts (5072) are threaded to the top of the outer side of the two side plates (2).

4. A grading device for sorting lychees according to claim 1, characterized in that: The flushing mechanism (5) also includes a sealing water inlet cap (508), which is installed on the left side of the top rear side of the water tank (501).

5. A grading device for sorting lychees according to claim 1, characterized in that: Multiple anti-fall plates (6) are fixedly connected at equal intervals on the inner sides of the two side plates (2), and the adjacent sides of the multiple anti-fall plates (6) are all designed with an inclination angle.

6. A grading device for sorting lychees according to claim 5, characterized in that: A rubber pressure plate (7) is fixedly connected between the multiple anti-fall plates (6) on the front side and the multiple anti-fall plates (6) on the rear side, and the multiple rubber pressure plates (7) are all designed in an arc shape.

7. A grading device for sorting lychees according to claim 1, characterized in that: The sorting racks (402) all adopt a tilt design with the left side lower and the right side higher, and the internal spacing of the sorting racks (402) decreases from top to bottom.

8. A grading device for sorting lychees according to claim 2, characterized in that: The inner perimeter of the water collection tank (504) is designed with an arc shape, and the bottom of the inner side of the water collection tank (504) is designed with a cone shape.

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